Useful surface parameters for biomaterial discrimination

Marina Etxeberria, Tomas Escuin, Miquel Vinas, Carlos Ascaso
2015 Scanning  
Topographical features of biomaterials' surfaces are determinant when addressing their application site. Unfortunately up to date there has not been an agreement regarding which surface parameters are more representative in discriminating between materials. Discs (n ¼ 16) of different currently used materials for implant prostheses fabrication, such as cast cobaltchrome, direct laser metal soldered (DLMS) cobaltchrome, titanium grade V, zirconia (Y-TZP), E-glass fiber-reinforced composite and
more » ... ced composite and polyetheretherketone (PEEK) were manufactured. Nanoscale topographical surface roughness parameters generated by atomic force microscopy (AFM), microscale surface roughness parameters obtained by white light interferometry (WLI) and water angle values obtained by the sessilewater-drop method were analyzed in order to assess which parameter provides the best optimum surface characterization method. Correlations between nanoroughness, microroughness, and hydrophobicity data were performed to achieve the best parameters giving the highest discriminatory power. A subset of six parameters for surface characterization were proposed. AFM and WLI techniques gave complementary information. Wettability did not correlate with any of the nanoroughness parameters while it however showed a weak correlation with microroughness parameters. SCANNING 37:429-437, 2015.
doi:10.1002/sca.21232 pmid:26148576 fatcat:mtnp6yt7fngnrmbnajjtxj226m